package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * 分类管理业务实现
 */
@Service
@Slf4j
public class CategonryServiceimpl implements CategoryService {

    @Autowired
   public CategoryMapper categoryMapper;

    @Autowired
    public DishMapper dishMapper;

    @Autowired
    public SetmealMapper setmealMapper;

    /**
     * 新增分类
     * @param categoryDTO
     */
    @Override
    public void add(CategoryDTO categoryDTO) {
        Category category = new Category();
//        对象属性拷贝
        BeanUtils.copyProperties(categoryDTO,category);

        category.setStatus(StatusConstant.DISABLE);
        /*category.setCreateTime(LocalDateTime.now());
        category.setUpdateTime(LocalDateTime.now());

        category.setCreateUser(BaseContext.getCurrentId());
        category.setUpdateUser(BaseContext.getCurrentId());*/

        categoryMapper.insert(category);
    }

    /**
     * 分页查询
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult page(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(),categoryPageQueryDTO.getPageSize());

        Page<Category> page = categoryMapper.pageQuery(categoryPageQueryDTO);

        long total = page.getTotal();
        List<Category> result = page.getResult();

        return new PageResult(total,result);
    }

    /**
     * 根据id删除
     * @param id
     */
    @Override
    public void updata(long id) {
        Integer count = dishMapper.countByCategoryId(id);
        if(count > 0){
            //判断当前分类是否关联了菜品，如果关联了则不能删除，抛出业务异常
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
//        根据分类id查询套餐
        count = setmealMapper.countByCategoryId(id);
        if(count > 0){
            //判断当前分类是否关联了菜品，如果关联了则不能删除，抛出业务异常
            //判断当前分类是否关联了套餐，如果关联了则不能删除，抛出业务异常
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.updata(id);
    }

    /**
     * 根据id修改
     * @param categoryDTO
     */
    @Override
    public void put(CategoryDTO categoryDTO) {
        Category category = new Category();
//        对象属性拷贝
        BeanUtils.copyProperties(categoryDTO,category);

        //category.setUpdateTime(LocalDateTime.now());
        //category.setUpdateUser(BaseContext.getCurrentId());

        categoryMapper.put(category);
    }

    /**
     * 启用禁用
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .id(id)
                .status(status)
                //.updateUser(BaseContext.getCurrentId())
                //.updateTime(LocalDateTime.now())
                .build();

        categoryMapper.put(category);
    }

    /**
     * 根据类型查询分类
     * @param category
     * @return
     */
    @Override
    public List<Category> list(Category category) {
        return categoryMapper.list(category);
    }


}
